BOSTON Boston police say they’ve shot and killed someone who ran from a vehicle they had tried to stop and then refused to drop a gun pointed at them.

Police say two officers tried to stop the vehicle at 5:47 p.m. near Yarmouth Street and Columbus Avenue in Boston’s Back Bay. The suspect fled on foot, chased by two plainclothes officers who had assisted in the stop. When the officers caught up with the suspect, he pointed a gun at them and ignored their commands to drop it.

“He was ordered to drop the firearm, refused to do so,” Boston Police Commissioner Ed Davis said. “The officers fired one shot. The suspect was struck in the chest and he’s been pronounced at Boston Medical Center.”

Police say there were witnesses to the events but did not immediately identify the suspect. Commissioner Davis says there was also videotape from security cameras that recorded some of the chase.